Perform the sequence of row operations on the following matrix.
Add -3 times R1 to R2.
?
?
A. ?
B. 
?
C.
?
D.
?
E.
?
Answer: B
Mathematics
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Indicate the period and the range of the given function.y = -3 sec x
A. P = ?; Range: y ? -3
B. P = 2?; Range: y ? -3
C. P = ?; Range: 
? 3
D. P = 2?; Range: 
? 3
Mathematics
Solve the problem. Snell's Law states that 
Use this law to find the requested value. If 
find 
Round your answer to the nearest degree.
A. ?2 = 35° B. ?2 = 31° C. ?2 = 32° D. ?2 = 34°
Mathematics
Select the augmented matrix for the system of linear equations.
?
?
A. ?
B. 
C. ?
D. ?
E. ?
Mathematics
Solve the problem.The effective annual yield on an investment compounded continuously is 6.3%. At what rate was it invested?
A. 6.1% B. 6.5% C. 6.11% D. 6.5%
Mathematics